| Williamstown to Cadillac (Michigan) | 621.28 mi (999.86 km) |
| Williamstown to Caguas (Puerto Rico) | 1,575.74 mi (2,535.90 km) |
| Williamstown to Cahokia (Illinois) | 817.45 mi (1,315.55 km) |
| Williamstown to Calabasas (California) | 2,419.78 mi (3,894.26 km) |
| Williamstown to Caldwell (Idaho) | 2,145.85 mi (3,453.41 km) |
| Williamstown to Caledonia (Wisconsin) | 702.86 mi (1,131.14 km) |
| Williamstown to Calera (Alabama) | 794.93 mi (1,279.31 km) |
| Williamstown to Calexico (California) | 2,290.43 mi (3,686.10 km) |
| Williamstown to Calhoun (Georgia) | 655.30 mi (1,054.60 km) |
| Williamstown to California (Maryland) | 125.93 mi (202.67 km) |
| Williamstown to California City (California) | 2,351.89 mi (3,785.00 km) |
| Williamstown to Callaway (Florida) | 890.20 mi (1,432.64 km) |
| Williamstown to Calumet City (Illinois) | 671.68 mi (1,080.97 km) |
| Williamstown to Calverton (Maryland) | 113.87 mi (183.25 km) |
| Williamstown to Camano (Washington) | 2,394.17 mi (3,853.04 km) |
